You have different kinds of sushi (maki, temaki, sashimi...) therefore I will give you the general ingredients, that way you can choose what you prefer to eat.
3 Important items: a sharp knife, a bamboo mat and plastic wrap.
Sushi rice or Thai rice
Tuna or salmon or both
Homemade Mayonnaise (egg, mustard, oil)
Siriracha hot chilli sauce
Extra: puffed rice, tempura, shrimp, fish eggs, other types of fish, ...